Start by having the computer scanned at a nationally recognized parts store. Many do it for free, and it will point us in the right direction as far as the ABS. Next, there is a vacuum operated brake booster behind the master cylender. There will be an aprox. 3/4 inch vacuum hose running from the motor to the round black booster. Make sure it isn's dry rotted, damaged, or disconnected. That is the item that makes the pedal easy to push and if you don't have the vacuum, you have standard NOT power brakes and the pedal becomes very hard to push. If you find no problem, have it vacuum tested to see if it holds vacuum.
Let me know what you find.
Joe
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Friday, February 13th, 2009 AT 7:41 PM